CVE-2020-28852
CVSS v3
7.5
HIGH
EPSS Score
1.7 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In x/text in Go before v0.3.5, a "slice bounds out of range" panic occurs in language.ParseAcceptLanguage while processing a BCP 47 tag. (x/text/language is supposed to be able to parse an HTTP Accept-Language header.)
Technical details
- Published
- 2021-01-02
Frequently asked questions
What is CVE-2020-28852?
In x/text in Go before v0.3.5, a "slice bounds out of range" panic occurs in language.ParseAcceptLanguage while processing a BCP 47 tag. (x/text/language is supposed to be able to parse an HTTP Accept-Language header.)
Is CVE-2020-28852 actively exploited?
Active exploitation of CVE-2020-28852 has not been confirmed. Its EPSS score was 1.7% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-28852?
CVE-2020-28852 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2020-28852 affecting your environment?
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